Season 1

Blue Planet II (2017), Season 1 is a seven-part BBC nature documentary you can watch online on iFILM, narrated by Sir David Attenborough.

This sequel to the 2001 original was shot with gear that simply didn't exist back then, and it shows. Each episode is its own world. "One Ocean" sets the scale; "The Deep" descends to where life takes shapes that barely seem possible. From there it moves through the crowded high-rise cities of coral reefs, the open-water "Big Blue" that behaves like a marine desert, the kelp forests of the green seas, and the coasts where water and land keep fighting over the line between them. The closing hour steps away from wildlife footage to talk plainly about what comes next for the sea.

The strength here isn't scenery — it's the stories of individual animals, with hunts, tricks and parenting staged like drama. Anyone who remembers the first Blue Planet will see how far underwater filming has come. Stream Blue Planet II Season 1 online on iFILM, all episodes in high quality.